APS is always better than SFA. It may be because most of them are professional in one of the musical instruments (it is compulsory). For SFA, academic is strong. Other than that, no more (music and sports are not strong).
Heard that APS boy volleyball team easily get into DBS, as among primary section they are the best, they are also very very strong in music area and it's compulsory for students. It depends on what you think is important, to get into very famous school or to be academically strong. Personally I choose SFA over APS, as ultimately it's exam result and nothing more that decide whether you can enter a popular faculty in top university.
I have checked the banding (sorry, boys only).
63 students go to band 1,
12 students go to band 2,
1 student go to band 3C.
6 students go to direct subsidy schools and I don't know the banding.
They are Tsung Tsin Christian Academy, Po Leung Kuk Laws Foundation College,
Tak Sun Secondary school.